CN107935486A - A kind of high-performance color self-compacting concrete manufacture craft - Google Patents
A kind of high-performance color self-compacting concrete manufacture craft Download PDFInfo
- Publication number
- CN107935486A CN107935486A CN201711181484.4A CN201711181484A CN107935486A CN 107935486 A CN107935486 A CN 107935486A CN 201711181484 A CN201711181484 A CN 201711181484A CN 107935486 A CN107935486 A CN 107935486A
- Authority
- CN
- China
- Prior art keywords
- water
- concrete
- cement
- manufacture craft
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000011376 self-consolidating concrete Substances 0.000 title claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000004567 concrete Substances 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 15
- 239000002893 slag Substances 0.000 claims abstract description 15
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 235000013312 flour Nutrition 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 230000000979 retarding effect Effects 0.000 claims abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 4
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 4
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 4
- 239000000047 product Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 239000004744 fabric Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 241001071917 Lithospermum Species 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003651 drinking water Substances 0.000 claims description 3
- 235000020188 drinking water Nutrition 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims 1
- 239000002002 slurry Substances 0.000 abstract description 5
- 239000010881 fly ash Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/82—Coloured materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of high-performance color self-compacting concrete manufacture craft, include the following steps：S1, cement：The II 52.5R type cement of high fineness P produced using Qinhuangdao Qian Ye Cement Co., Ltds.Slag powders：The property indices using Shoudu Iron and Steel Co water-granulated slag as main material production are used to meet or exceed the ground slag powder of S95 standards.Specific surface area is not less than 4000cm2/g, and water demand ratio is preferably not more than 105, and loss on ignition is preferably not more than 5%；S2, silica flour：Silica flour is the dust for controlling golden electric furnace discharge, and specific surface area is not less than 180000cm2/g, density about 2200Kg/m3, and average diameter is 0.1~0.2 microns, and wherein the SiO2 contents of high activity are not less than 85%；S3, additive：Use the special special efficient retarding and water reducing agents of UNF 5AS C60 of Tianjin Yong Yang water-reducing agents factory, water-reducing rate is more than 25%, due to the addition of flyash, it instead of part of cement dosage, reduce the cost of raw material, the slurry viscosity of concrete is set to diminish, the mobility higher of concrete mix, it is easier to fill closely knit.
Description
Technical field
The present invention relates to building material field, more specifically, more particularly to a kind of high-performance color self-compacting concrete
Manufacture craft.
Background technology
The good landscape and the feature of environmental protection that environment-friendly type bank protection and green retaining wall have, can be widely applied to all parts of the country
The multiple fields such as river transformation, reservoir reconstruction, lake transformation, highway rebuilding, garden landscape, real estate cell.Its landscape is to production
The requirement of product overall appearance is very high, must not there is aberration, honeycomb, pitted skin, and front and side must not have a large amount of stomatas.Due to the mould knot
Structure is complicated, feeds stenostomia, vertical height is deep, and the product produced using normal concrete, is extremely difficult to above-mentioned requirements.Together
When the Die price it is expensive, the attached vibrator used in existing production technology mould is damaged it is big, during vibration moulding
Loud noise can be produced, production technology is badly in need of improving.Meanwhile common concrete cannot meet the production need of environment-friendly type bank protection
Ask, this has been obtained for verifying in actual production.And self-compacting concrete refers under self gravitation effect, can flow,
It is closely knit, template can be also filled up completely even if there is fine and close reinforcing bar, while fine homogenieity is obtained, and extraneous vibration is not required
Concrete.Therefore in order to meet the production needs for pouring environment-friendly type bank protection, it is necessary to research and develop that a kind of working performance is excellent, mobility
Bigger, can exempt from the self-compacting concrete that shakes completely, by design science, rational production technology to meet the need of manufacturing enterprise
Will, for this reason, a kind of it is proposed that high-performance color self-compacting concrete manufacture craft.
The content of the invention
The purpose of the present invention is to solve shortcoming existing in the prior art, and a kind of high-performance color proposed is from close
Real concrete for making technique, makes the slurry viscosity of concrete diminish, the mobility higher of concrete mix, it is easier to fill close
It is real.
To achieve the above object, the present invention provides following technical solution：A kind of high-performance color self-compacting concrete makes
Technique, includes the following steps：
S1, cement：The II 52.5R type cement of high fineness P produced using Qinhuangdao Qian Ye Cement Co., Ltds.Slag powders：Make
The ground slag powder of S95 standards is met or exceeded for the property indices of main material production to Shoudu Iron and Steel Co water-granulated slag.Than
Surface area is not less than 4000cm2/g, and water demand ratio is preferably not more than 105, and loss on ignition is preferably not more than 5%；
S2, silica flour：Silica flour is the dust for controlling golden electric furnace discharge, and specific surface area is not less than 180000cm2/g, density about 2200Kg/
M3, average diameter are 0.1~0.2 microns, and wherein the SiO2 contents of high activity are not less than 85%；
S3, additive：Use the special special efficient retarding and water reducing agents of UNF-5AS-C60 of Tianjin Yong Yang water-reducing agents factory, water-reducing rate
More than 25%, sand：Use sand in IIth area, modulus of fineness：2.8, stone：To enable concrete to pass through closeer reinforcing bar, stone
Seed footpath uses 5~15mm continuous gradings；
S4, water：Drinking water, alkali content limit value：Total alkali per cubic meter of concrete is not preferably greater than 3kg, and 3.3.2 match ratios are set
The design strength for counting concrete is prepared by C70, is computed and trial, definite main proportioning are：Water 165Kg/m3；Cement 358Kg/
m3；Sand 658Kg/m3；Stone 947Kg/m3；Slag powders 193Kg/m3；Silica flour 26Kg/m3；Additive 15.43Kg/m3；
S5, stirring：Water-reducing agent and water are launched into mixer, stirring, terminates to stir after mixer spindle motor current remains stable
Mix, transport：After stirring, discharging, reaches mould park, scrap steel container need to install vibration damping and set by forklift transport hopper
It is standby, prevent concrete disintegration Qinshui；
S6, pour：Hopper is adjusted to directly over mould, hopper is opened, feeds intake and pour, it is desirable to the uniform blanking of concrete, and its
Speed is unsuitable too fast or excessively slow, was advisable with 3~5 minutes, rested：Waterproof cloth is covered after the completion of pouring to rest 90~120min, makes to mix
Solidifying soil reaches or is up to initial set, steam-cured：Into waterproof cloth, logical steam heat up steam-cured, keeps the temperature 4~5h afterwards, then opens
Waterproof cloth cools down；
S7, the demoulding：It is no more than 5 DEG C when mould and product temperature are down to room temperature difference and can demoulds, using hanging by product and steel
Mould separates, natural curing：Product is transported to pile at outdoor stacking by fork truck, starts to carry out watering maintenance in 7 days, is finished product
Storage.
Preferably, the mixing time is 120s.
Preferably, the steam-cured requirement of steam-cured heating is warming up to 60 DEG C in 1h.
The technique effect and advantage of the present invention：
1st, the self-compacting concrete formula as a result of science and it is advanced pour production technology, it is not only easy to operate, save
Manually, energy consumption is reduced, moreover it is possible to reduce mould damage while eliminating production noise.
, due to the addition of flyash, instead of part of cement dosage, reduce the cost of raw material, make the slurry of concrete
Viscosity diminishes, the mobility higher of concrete mix, it is easier to fill closely knit.
, addition water-reducing agent, saved the dosage of cementitious material, reduced production cost, improved the working performance of concrete,
Make up to the effect of self-compaction；The addition of water-reducing agent reduces water-cement ratio, prevents that the viscosity of concrete is too small, cement slurry is wrapped up in
Incessantly bubble and emerge, be enriched with to be formed compared with gross blow hole in product surface.
, steam curing process can shorten demoulding time, accelerate the production cycle, improve mould utilization factor, strengthen early strength, reduce
Product breakage, is adapted to the needs of the higher punching block cement prefabricated component manufacturing enterprise of cost.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not before creative work is made
All other embodiments obtained are put, belong to the scope of protection of the invention.
Embodiment
A kind of high-performance color self-compacting concrete manufacture craft, includes the following steps：
S1, cement：The II 52.5R type cement of high fineness P produced using Qinhuangdao Qian Ye Cement Co., Ltds.Slag powders：Make
The ground slag powder of S95 standards is met or exceeded for the property indices of main material production to Shoudu Iron and Steel Co water-granulated slag.Than
Surface area is not less than 4000cm2/g, and water demand ratio is preferably not more than 105, and loss on ignition is preferably not more than 5%；
S2, silica flour：Silica flour is the dust for controlling golden electric furnace discharge, and specific surface area is not less than 180000cm2/g, density about 2200Kg/
M3, average diameter are 0.1~0.2 microns, and wherein the SiO2 contents of high activity are not less than 85%；
S3, additive：Use the special special efficient retarding and water reducing agents of UNF-5AS-C60 of Tianjin Yong Yang water-reducing agents factory, water-reducing rate
More than 25%, sand：Use sand in IIth area, modulus of fineness：2.8, stone：To enable concrete to pass through closeer reinforcing bar, stone
Seed footpath uses 5~15mm continuous gradings；
S4, water：Drinking water, alkali content limit value：Total alkali per cubic meter of concrete is not preferably greater than 3kg, and 3.3.2 match ratios are set
The design strength for counting concrete is prepared by C70, is computed and trial, definite main proportioning are：Water 165Kg/m3；Cement 358Kg/
m3；Sand 658Kg/m3；Stone 947Kg/m3；Slag powders 193Kg/m3；Silica flour 26Kg/m3；Additive 15.43Kg/m3；
S5, stirring：Water-reducing agent and water are launched into mixer, stirring, terminates to stir after mixer spindle motor current remains stable
Mix, transport：After stirring, discharging, reaches mould park, scrap steel container need to install vibration damping and set by forklift transport hopper
It is standby, prevent concrete disintegration Qinshui；
S6, pour：Hopper is adjusted to directly over mould, hopper is opened, feeds intake and pour, it is desirable to the uniform blanking of concrete, and its
Speed is unsuitable too fast or excessively slow, was advisable with 3~5 minutes, rested：Waterproof cloth is covered after the completion of pouring to rest 90~120min, makes to mix
Solidifying soil reaches or is up to initial set, steam-cured：Into waterproof cloth, logical steam heat up steam-cured, keeps the temperature 4~5h afterwards, then opens
Waterproof cloth cools down；
S7, the demoulding：It is no more than 5 DEG C when mould and product temperature are down to room temperature difference and can demoulds, using hanging by product and steel
Mould separates, natural curing：Product is transported to pile at outdoor stacking by fork truck, starts to carry out watering maintenance in 7 days, is finished product
Storage.
In summary：A kind of high-performance color self-compacting concrete manufacture craft provided by the invention, as a result of section
Self-compacting concrete formula and it is advanced pour production technology, it is not only easy to operate, save manually, reduce energy consumption, moreover it is possible to
Reduce mould damage while eliminating production noise, due to the addition of flyash, instead of part of cement dosage, reduce former material
Expect cost, the slurry viscosity of concrete is diminished, the mobility higher of concrete mix, it is easier to fill closely knit.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic,
Within the spirit and principles of the invention, any modification, equivalent replacement, improvement and so on, should be included in the present invention's
Within protection domain.
Claims (3)
- A kind of 1. high-performance color self-compacting concrete manufacture craft, it is characterised in that：Include the following steps：S1, cement：The II 52.5R type cement of high fineness P produced using Qinhuangdao Qian Ye Cement Co., Ltds, slag powders：Make The ground slag powder of S95 standards is met or exceeded for the property indices of main material production to Shoudu Iron and Steel Co water-granulated slag, than Surface area is not less than 4000cm2/g, and water demand ratio is preferably not more than 105, and loss on ignition is preferably not more than 5%；S2, silica flour：Silica flour is the dust for controlling golden electric furnace discharge, and specific surface area is not less than 180000cm2/g, density about 2200Kg/ M3, average diameter are 0.1~0.2 microns, and wherein the SiO2 contents of high activity are not less than 85%；S3, additive：Use the special special efficient retarding and water reducing agents of UNF-5AS-C60 of Tianjin Yong Yang water-reducing agents factory, water-reducing rate More than 25%, sand：Use sand in IIth area, modulus of fineness：2.8, stone：To enable concrete to pass through closeer reinforcing bar, stone Seed footpath uses 5~15mm continuous gradings；S4, water：Drinking water, alkali content limit value：Total alkali per cubic meter of concrete is not preferably greater than 3kg, and 3.3.2 match ratios are set The design strength for counting concrete is prepared by C70, is computed and trial, definite main proportioning are：Water 165Kg/m3；Cement 358Kg/ m3；Sand 658Kg/m3；Stone 947Kg/m3；Slag powders 193Kg/m3；Silica flour 26Kg/m3；Additive 15.43Kg/m3；S5, stirring：Water-reducing agent and water are launched into mixer, stirring, terminates to stir after mixer spindle motor current remains stable Mix, transport：After stirring, discharging, reaches mould park, scrap steel container need to install vibration damping and set by forklift transport hopper It is standby, prevent concrete disintegration Qinshui；S6, pour：Hopper is adjusted to directly over mould, hopper is opened, feeds intake and pour, it is desirable to the uniform blanking of concrete, and its Speed is unsuitable too fast or excessively slow, was advisable with 3~5 minutes, rested：Waterproof cloth is covered after the completion of pouring to rest 90~120min, makes to mix Solidifying soil reaches or is up to initial set, steam-cured：Into waterproof cloth, logical steam heat up steam-cured, keeps the temperature 4~5h afterwards, then opens Waterproof cloth cools down；S7, the demoulding：It is no more than 5 DEG C when mould and product temperature are down to room temperature difference and can demoulds, using hanging by product and steel Mould separates, natural curing：Product is transported to pile at outdoor stacking by fork truck, starts to carry out watering maintenance in 7 days, is finished product Storage.
- A kind of 2. high-performance color self-compacting concrete manufacture craft according to claim 1, it is characterised in that：It is described to stir It is 120s to mix the time.
- A kind of 3. high-performance color self-compacting concrete manufacture craft according to claim 1, it is characterised in that：The steaming Support the steam-cured requirement of heating and 60 DEG C are warming up in 1h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181484.4A CN107935486A (en) | 2017-11-23 | 2017-11-23 | A kind of high-performance color self-compacting concrete manufacture craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711181484.4A CN107935486A (en) | 2017-11-23 | 2017-11-23 | A kind of high-performance color self-compacting concrete manufacture craft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107935486A true CN107935486A (en) | 2018-04-20 |
Family
ID=61930977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711181484.4A Pending CN107935486A (en) | 2017-11-23 | 2017-11-23 | A kind of high-performance color self-compacting concrete manufacture craft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107935486A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353242A (en) * | 2008-09-16 | 2009-01-28 | 中国建筑第三工程局商品混凝土供应站成都分站 | Machine-made sand self-compaction concrete |
| CN103058597A (en) * | 2013-01-08 | 2013-04-24 | 黄清林 | Material for manufacturing wood color self-compacting concrete |
| CN104230256A (en) * | 2014-08-23 | 2014-12-24 | 湖北正茂新材料科技有限公司 | Self-compaction concrete and production technique of prefabricated municipal quadrate culvert component |
| CN104692714A (en) * | 2013-12-05 | 2015-06-10 | 湖北正茂新材料科技有限公司 | Self compact concrete and environmentally friendly slope protection member production technology |
-
2017
- 2017-11-23 CN CN201711181484.4A patent/CN107935486A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353242A (en) * | 2008-09-16 | 2009-01-28 | 中国建筑第三工程局商品混凝土供应站成都分站 | Machine-made sand self-compaction concrete |
| CN103058597A (en) * | 2013-01-08 | 2013-04-24 | 黄清林 | Material for manufacturing wood color self-compacting concrete |
| CN104692714A (en) * | 2013-12-05 | 2015-06-10 | 湖北正茂新材料科技有限公司 | Self compact concrete and environmentally friendly slope protection member production technology |
| CN104230256A (en) * | 2014-08-23 | 2014-12-24 | 湖北正茂新材料科技有限公司 | Self-compaction concrete and production technique of prefabricated municipal quadrate culvert component |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102503201B (en) | Pre-coated sand, preparation method thereof and composite water permeable brick | |
| CN107602018B (en) | silane coupling agent-fly ash floating bead light high-strength foam concrete and preparation method thereof | |
| CN104926240B (en) | A kind of high durable compound road curb stone and preparation method thereof | |
| CN105801165B (en) | The permeable composition of mixed foaming mud lightweight and preparation method for roadbed filling | |
| CN111574119A (en) | Foam concrete with high light weight and performance and preparation method thereof | |
| CN105272001B (en) | A kind of haydite concrete and preparation method thereof | |
| CN107226662A (en) | A kind of large dosage heavy blast furnace slag complex sand base water-permeable brick and its high efficiency preparation method | |
| CN108609974A (en) | A kind of preparation method of ultra-high performance concrete and prefabricated PC | |
| CN106830987A (en) | A kind of artificial culture stone with stone waste sludge as raw material and preparation method thereof | |
| CN107162630A (en) | High-performance foam concrete self-insulating brick and its production technology and device | |
| CN104230256A (en) | Self-compaction concrete and production technique of prefabricated municipal quadrate culvert component | |
| CN109679660A (en) | A kind of curing method of heavy-metal contaminated soil | |
| CN109320169A (en) | A kind of cracking resistance cement pipe pile of photovoltaic and preparation method thereof | |
| CN104692714A (en) | Self compact concrete and environmentally friendly slope protection member production technology | |
| CN111892364A (en) | Multi-solid-waste non-fired non-steamed double-layer-structure water permeable brick and preparation method thereof | |
| CN105297778A (en) | Nodular cast iron fiber well lid and preparation method thereof | |
| CN103467029B (en) | A kind of maize straw hollow-brick block and preparation method thereof | |
| CN108101432A (en) | A kind of structure gradient type cement base permeable pavement brick and preparation method thereof | |
| CN103664063B (en) | Method and device for preparing ceramsite aerated concrete block | |
| CN102336543A (en) | Red mud permeable brick and preparation method thereof | |
| CN109503107A (en) | A kind of glass magnesium composite floor board | |
| CN103304190B (en) | A kind of roof waterproof layer cast high impervious cracking resistance protective layer and manufacture craft thereof | |
| CN108675691A (en) | A kind of light-weight foam composite concrete wallboard | |
| CN107142805A (en) | The technique that a kind of utilization light soil handles soft base | |
| CN107935486A (en) | A kind of high-performance color self-compacting concrete manufacture craft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180420 |